Tools Required

1. Attach the J 22124-91 to the air dryer.
2. Attach the J 22124-B to the J 22124-91 with the toggle valve on the opposite side of the air compressor. Close the toggle valve.
3. Apply air pressure at the schrader valve. Pressurize until the J 22124-B reads 690 kPa (100 psi).
4. Check the following areas using soap bubbles:

•	Solenoid valve

•	Replace the air compressor head if leaking.

•	Air dryer to compressor head O-ring

•	Replace the air dryer if leaking.

•	Air dryer cover

•	Replace the air dryer if leaking.

•	Air compressor head gasket

•	Replace the air compressor head if leaking.

•	Air compressor head cover gasket

•	Tighten the cover bolts to 5.6 N·m (50 lb in) if the head cover gasket is leaking. If the leak persists, replace the air compressor head.